I'm using Neo4J 1.6.2 and Neo4J Spatial 0.8. I'm working against the SimplePointLayer and adding a (lat,long) via add(double x, double y) The Node associated with the location and returned in the SpatialDatabaseRecord has an id, which is generated by the IdGenerator. My question is: is there any way to pass in my own ids (unique) or control this process in any way? Thanks. Eugen.
Eugen,
Right now we are taking the default node ids, but I think some custom
property to use instead, like your own I'd, could be used. Also, I'd you
get back your domain node, you could just read it out again?
On May 6, 2012 6:45 PM, "Eugen Paraschiv" <hanrisel...@gmail.com> wrote:
> I'm using Neo4J 1.6.2 and Neo4J Spatial 0.8.
> I'm working against the SimplePointLayer and adding a (lat,long) via
> add(double x, double y)
> The Node associated with the location and returned in the
> SpatialDatabaseRecord has an id, which is generated by the IdGenerator.
> My question is: is there any way to pass in my own ids (unique) or control
> this process in any way?
> Thanks.
> Eugen.
OK, so first, on the custom property you mention, how would I use that to gain control of the id generation process. As far as I can tell, the ids get generated automatically and I couldn't find a way to control the process. Is there any example for this one? Next, let me give you some more background of why I would want to do this: I have 2 nodes, both running neo4j and I'm indexing a location (lat,long) in both of them; each one will assign it's own id to that location, so the id's I'm getting back are different. If I could set the ids myself, I would be able to generate an id (manually, and ensure it's unique) and then pass it into the index operation on both machines, so that they both end up using the same id. Hopefully that clarifies the usecase and what kind of control I need related to ids. Thanks. Eugen.
On Sunday, May 6, 2012 8:57:42 PM UTC+3, Peter Neubauer wrote:
> Eugen, > Right now we are taking the default node ids, but I think some custom > property to use instead, like your own I'd, could be used. Also, I'd you > get back your domain node, you could just read it out again? > On May 6, 2012 6:45 PM, "Eugen Paraschiv" <hanrisel...@gmail.com> wrote:
>> I'm using Neo4J 1.6.2 and Neo4J Spatial 0.8. >> I'm working against the SimplePointLayer and adding a (lat,long) via >> add(double x, double y) >> The Node associated with the location and returned in the >> SpatialDatabaseRecord has an id, which is generated by the IdGenerator. >> My question is: is there any way to pass in my own ids (unique) or >> control this process in any way? >> Thanks. >> Eugen.
Mmh,
so you are saying if lat/lon are the same, then the indexed geometry
node should be the same? You could of course do some custom structure
and do exactly that - attaching your POI to the same Location node
that then gets indexed only once? Not sure I understand why having
your custom IDs would help you here.
On Mon, May 7, 2012 at 2:29 PM, Eugen Paraschiv <hanrisel...@gmail.com> wrote:
> OK, so first, on the custom property you mention, how would I use that to
> gain control of the id generation process. As far as I can tell, the ids get
> generated automatically and I couldn't find a way to control the process. Is
> there any example for this one?
> Next, let me give you some more background of why I would want to do this: I
> have 2 nodes, both running neo4j and I'm indexing a location (lat,long) in
> both of them; each one will assign it's own id to that location, so the id's
> I'm getting back are different. If I could set the ids myself, I would be
> able to generate an id (manually, and ensure it's unique) and then pass it
> into the index operation on both machines, so that they both end up using
> the same id.
> Hopefully that clarifies the usecase and what kind of control I need related
> to ids.
> Thanks.
> Eugen.
> On Sunday, May 6, 2012 8:57:42 PM UTC+3, Peter Neubauer wrote:
>> Eugen,
>> Right now we are taking the default node ids, but I think some custom
>> property to use instead, like your own I'd, could be used. Also, I'd you get
>> back your domain node, you could just read it out again?
>> On May 6, 2012 6:45 PM, "Eugen Paraschiv" <hanrisel...@gmail.com> wrote:
>>> I'm using Neo4J 1.6.2 and Neo4J Spatial 0.8.
>>> I'm working against the SimplePointLayer and adding a (lat,long) via
>>> add(double x, double y)
>>> The Node associated with the location and returned in the
>>> SpatialDatabaseRecord has an id, which is generated by the IdGenerator.
>>> My question is: is there any way to pass in my own ids (unique) or
>>> control this process in any way?
>>> Thanks.
>>> Eugen.
So, I didn't expect Neo4J to assign the same id based on the fact that
lat,long were the same. That's what I want, but I don't expect that to be
the default behaviour. What I am going for is controlling that behaviour
(setting the id) manually, from the outside. The reason that would help is
that I'm adding the geo point (lat,long) to neo4j and then I'm storing the
id somewhere else, so that I can later on work with it. In Neo4J spatial,
most if not all operations are related to this geom id - for instance,
delete is by id, so in order to delete the node, I need to keep track of
this id.
If each server will assign it's own id, then I will need to store all of
these, whereas if I can specify a single id, then I only need to store that
one.
Thanks for the feedback.
Eugen.
peter.neuba...@neotechnology.com> wrote:
> Mmh,
> so you are saying if lat/lon are the same, then the indexed geometry
> node should be the same? You could of course do some custom structure
> and do exactly that - attaching your POI to the same Location node
> that then gets indexed only once? Not sure I understand why having
> your custom IDs would help you here.
> If you can write, you can code - @coderdojomalmo
> If you can sketch, you can use a graph database - @neo4j
> On Mon, May 7, 2012 at 2:29 PM, Eugen Paraschiv <hanrisel...@gmail.com>
> wrote:
> > OK, so first, on the custom property you mention, how would I use that to
> > gain control of the id generation process. As far as I can tell, the ids
> get
> > generated automatically and I couldn't find a way to control the
> process. Is
> > there any example for this one?
> > Next, let me give you some more background of why I would want to do
> this: I
> > have 2 nodes, both running neo4j and I'm indexing a location (lat,long)
> in
> > both of them; each one will assign it's own id to that location, so the
> id's
> > I'm getting back are different. If I could set the ids myself, I would be
> > able to generate an id (manually, and ensure it's unique) and then pass
> it
> > into the index operation on both machines, so that they both end up using
> > the same id.
> > Hopefully that clarifies the usecase and what kind of control I need
> related
> > to ids.
> > Thanks.
> > Eugen.
> > On Sunday, May 6, 2012 8:57:42 PM UTC+3, Peter Neubauer wrote:
> >> Eugen,
> >> Right now we are taking the default node ids, but I think some custom
> >> property to use instead, like your own I'd, could be used. Also, I'd
> you get
> >> back your domain node, you could just read it out again?
> >> On May 6, 2012 6:45 PM, "Eugen Paraschiv" <hanrisel...@gmail.com>
> wrote:
> >>> I'm using Neo4J 1.6.2 and Neo4J Spatial 0.8.
> >>> I'm working against the SimplePointLayer and adding a (lat,long) via
> >>> add(double x, double y)
> >>> The Node associated with the location and returned in the
> >>> SpatialDatabaseRecord has an id, which is generated by the IdGenerator.
> >>> My question is: is there any way to pass in my own ids (unique) or
> >>> control this process in any way?
> >>> Thanks.
> >>> Eugen.
Right,
so you want to federate the same lon/lat geometry point over several
servers and attach different domain nodes to it in the different
graphs? Sorry, I am not totally clear over how you are using it. Maybe
we could even Skype?
On Mon, May 7, 2012 at 3:45 PM, Eugen Paraschiv <hanrisel...@gmail.com> wrote:
> So, I didn't expect Neo4J to assign the same id based on the fact that
> lat,long were the same. That's what I want, but I don't expect that to be
> the default behaviour. What I am going for is controlling that behaviour
> (setting the id) manually, from the outside. The reason that would help is
> that I'm adding the geo point (lat,long) to neo4j and then I'm storing the
> id somewhere else, so that I can later on work with it. In Neo4J spatial,
> most if not all operations are related to this geom id - for instance,
> delete is by id, so in order to delete the node, I need to keep track of
> this id.
> If each server will assign it's own id, then I will need to store all of
> these, whereas if I can specify a single id, then I only need to store that
> one.
> Thanks for the feedback.
> Eugen.
> On Mon, May 7, 2012 at 4:40 PM, Peter Neubauer
> <peter.neuba...@neotechnology.com> wrote:
>> Mmh,
>> so you are saying if lat/lon are the same, then the indexed geometry
>> node should be the same? You could of course do some custom structure
>> and do exactly that - attaching your POI to the same Location node
>> that then gets indexed only once? Not sure I understand why having
>> your custom IDs would help you here.
>> If you can write, you can code - @coderdojomalmo
>> If you can sketch, you can use a graph database - @neo4j
>> On Mon, May 7, 2012 at 2:29 PM, Eugen Paraschiv <hanrisel...@gmail.com>
>> wrote:
>> > OK, so first, on the custom property you mention, how would I use that
>> > to
>> > gain control of the id generation process. As far as I can tell, the ids
>> > get
>> > generated automatically and I couldn't find a way to control the
>> > process. Is
>> > there any example for this one?
>> > Next, let me give you some more background of why I would want to do
>> > this: I
>> > have 2 nodes, both running neo4j and I'm indexing a location (lat,long)
>> > in
>> > both of them; each one will assign it's own id to that location, so the
>> > id's
>> > I'm getting back are different. If I could set the ids myself, I would
>> > be
>> > able to generate an id (manually, and ensure it's unique) and then pass
>> > it
>> > into the index operation on both machines, so that they both end up
>> > using
>> > the same id.
>> > Hopefully that clarifies the usecase and what kind of control I need
>> > related
>> > to ids.
>> > Thanks.
>> > Eugen.
>> > On Sunday, May 6, 2012 8:57:42 PM UTC+3, Peter Neubauer wrote:
>> >> Eugen,
>> >> Right now we are taking the default node ids, but I think some custom
>> >> property to use instead, like your own I'd, could be used. Also, I'd
>> >> you get
>> >> back your domain node, you could just read it out again?
>> >> On May 6, 2012 6:45 PM, "Eugen Paraschiv" <hanrisel...@gmail.com>
>> >> wrote:
>> >>> I'm using Neo4J 1.6.2 and Neo4J Spatial 0.8.
>> >>> I'm working against the SimplePointLayer and adding a (lat,long) via
>> >>> add(double x, double y)
>> >>> The Node associated with the location and returned in the
>> >>> SpatialDatabaseRecord has an id, which is generated by the
>> >>> IdGenerator.
>> >>> My question is: is there any way to pass in my own ids (unique) or
>> >>> control this process in any way?
>> >>> Thanks.
>> >>> Eugen.
It sounds like you want two databases to have the same id space. In that
case, you should use HA.
If, instead you want two databases to have only parts of the graph shared,
and other parts different, then it gets more complex. In that case I agree
with Peter, you need to explain your actual use case so he (or I, or
someone else) can recommend a solution. A key questions to answer: why do
you have two servers? What is the purpose: redundancy, sharding, different
apps?
I also think this question is not specific to neo4j-spatial, but to neo4j
in general. The concept of controlling the node-id from the app. In
principle it cannot, or even should not be done. I suspect your reasons for
wanting this are based on a use case or feature that might be satisfied in
some other way.
peter.neuba...@neotechnology.com> wrote:
> Right,
> so you want to federate the same lon/lat geometry point over several
> servers and attach different domain nodes to it in the different
> graphs? Sorry, I am not totally clear over how you are using it. Maybe
> we could even Skype?
> If you can write, you can code - @coderdojomalmo
> If you can sketch, you can use a graph database - @neo4j
> On Mon, May 7, 2012 at 3:45 PM, Eugen Paraschiv <hanrisel...@gmail.com>
> wrote:
> > So, I didn't expect Neo4J to assign the same id based on the fact that
> > lat,long were the same. That's what I want, but I don't expect that to be
> > the default behaviour. What I am going for is controlling that behaviour
> > (setting the id) manually, from the outside. The reason that would help
> is
> > that I'm adding the geo point (lat,long) to neo4j and then I'm storing
> the
> > id somewhere else, so that I can later on work with it. In Neo4J spatial,
> > most if not all operations are related to this geom id - for instance,
> > delete is by id, so in order to delete the node, I need to keep track of
> > this id.
> > If each server will assign it's own id, then I will need to store all of
> > these, whereas if I can specify a single id, then I only need to store
> that
> > one.
> > Thanks for the feedback.
> > Eugen.
> > On Mon, May 7, 2012 at 4:40 PM, Peter Neubauer
> > <peter.neuba...@neotechnology.com> wrote:
> >> Mmh,
> >> so you are saying if lat/lon are the same, then the indexed geometry
> >> node should be the same? You could of course do some custom structure
> >> and do exactly that - attaching your POI to the same Location node
> >> that then gets indexed only once? Not sure I understand why having
> >> your custom IDs would help you here.
> >> If you can write, you can code - @coderdojomalmo
> >> If you can sketch, you can use a graph database - @neo4j
> >> On Mon, May 7, 2012 at 2:29 PM, Eugen Paraschiv <hanrisel...@gmail.com>
> >> wrote:
> >> > OK, so first, on the custom property you mention, how would I use that
> >> > to
> >> > gain control of the id generation process. As far as I can tell, the
> ids
> >> > get
> >> > generated automatically and I couldn't find a way to control the
> >> > process. Is
> >> > there any example for this one?
> >> > Next, let me give you some more background of why I would want to do
> >> > this: I
> >> > have 2 nodes, both running neo4j and I'm indexing a location
> (lat,long)
> >> > in
> >> > both of them; each one will assign it's own id to that location, so
> the
> >> > id's
> >> > I'm getting back are different. If I could set the ids myself, I would
> >> > be
> >> > able to generate an id (manually, and ensure it's unique) and then
> pass
> >> > it
> >> > into the index operation on both machines, so that they both end up
> >> > using
> >> > the same id.
> >> > Hopefully that clarifies the usecase and what kind of control I need
> >> > related
> >> > to ids.
> >> > Thanks.
> >> > Eugen.
> >> > On Sunday, May 6, 2012 8:57:42 PM UTC+3, Peter Neubauer wrote:
> >> >> Eugen,
> >> >> Right now we are taking the default node ids, but I think some custom
> >> >> property to use instead, like your own I'd, could be used. Also, I'd
> >> >> you get
> >> >> back your domain node, you could just read it out again?
> >> >> On May 6, 2012 6:45 PM, "Eugen Paraschiv" <hanrisel...@gmail.com>
> >> >> wrote:
> >> >>> I'm using Neo4J 1.6.2 and Neo4J Spatial 0.8.
> >> >>> I'm working against the SimplePointLayer and adding a (lat,long) via
> >> >>> add(double x, double y)
> >> >>> The Node associated with the location and returned in the
> >> >>> SpatialDatabaseRecord has an id, which is generated by the
> >> >>> IdGenerator.
> >> >>> My question is: is there any way to pass in my own ids (unique) or
> >> >>> control this process in any way?
> >> >>> Thanks.
> >> >>> Eugen.
